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Title: Freestanding, heat resistant microporous film for use in energy storage devices

Abstract

Preferred embodiments of a freestanding, heat resistant microporous polymer film (10) constructed for use in an energy storage device (70, 100) implements one or more of the following approaches to exhibit excellent high temperature mechanical and dimensional stability: incorporation into a porous polyolefin film of sufficiently high loading levels of inorganic or ceramic filler material (16) to maintain porosity (18) and achieve low thermal shrinkage; use of crosslinkable polyethylene to contribute to crosslinking the polymer matrix (14) in a highly inorganic material-filled polyolefin film; and heat treating or annealing of biaxially oriented, highly inorganic material-filled polyolefin film above the melting point temperature of the polymer matrix to reduce residual stress while maintaining high porosity. The freestanding, heat resistant microporous polymer film embodiments exhibit extremely low resistance, as evidenced by MacMullin numbers of less than 4.5.

Inventors:
; ;
Publication Date:
Research Org.:
National Energy Technology Laboratory, Pittsburgh, PA, and Morgantown, WV (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1422800
Patent Number(s):
9,896,555
Application Number:
13/255,868
Assignee:
Amtek Research International LLC (Lebanon, OR) NETL
DOE Contract Number:  
FC26-05NT42403
Resource Type:
Patent
Resource Relation:
Patent File Date: 2010 Mar 19
Country of Publication:
United States
Language:
English

Citation Formats

Pekala, Richard W., Cherukupalli, Srinivas, and Waterhouse, Robert R. Freestanding, heat resistant microporous film for use in energy storage devices. United States: N. p., 2018. Web.
Pekala, Richard W., Cherukupalli, Srinivas, & Waterhouse, Robert R. Freestanding, heat resistant microporous film for use in energy storage devices. United States.
Pekala, Richard W., Cherukupalli, Srinivas, and Waterhouse, Robert R. Tue . "Freestanding, heat resistant microporous film for use in energy storage devices". United States. doi:. https://www.osti.gov/servlets/purl/1422800.
@article{osti_1422800,
title = {Freestanding, heat resistant microporous film for use in energy storage devices},
author = {Pekala, Richard W. and Cherukupalli, Srinivas and Waterhouse, Robert R.},
abstractNote = {Preferred embodiments of a freestanding, heat resistant microporous polymer film (10) constructed for use in an energy storage device (70, 100) implements one or more of the following approaches to exhibit excellent high temperature mechanical and dimensional stability: incorporation into a porous polyolefin film of sufficiently high loading levels of inorganic or ceramic filler material (16) to maintain porosity (18) and achieve low thermal shrinkage; use of crosslinkable polyethylene to contribute to crosslinking the polymer matrix (14) in a highly inorganic material-filled polyolefin film; and heat treating or annealing of biaxially oriented, highly inorganic material-filled polyolefin film above the melting point temperature of the polymer matrix to reduce residual stress while maintaining high porosity. The freestanding, heat resistant microporous polymer film embodiments exhibit extremely low resistance, as evidenced by MacMullin numbers of less than 4.5.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Feb 20 00:00:00 EST 2018},
month = {Tue Feb 20 00:00:00 EST 2018}
}

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